Well-drilling machine.



jNo. 735,222. PATENTBD AUG. 4, '1203. W..'N. DUFPORD.

WELL DRILLING MACHINE.

APPLICATION FILED OCT. 25, 1902y No Mopar..

2 SHEETS-'SHEET 1- @Afrwgzy No. 735,222'. A PATENTED AUG. 4, 1903. y W. N. DUPIORD.

WELL DRILLING MACHINE.

` APPLICATION FILED OCT. 25, 1902.

N0 MODEL. 2 SHEETS-#SHEET E.

.Aifmzays.

UNITED STATES Patented August 4,

WILLIAM N. DUFFORD, OF FINDLAY, OHIO;

WELLf-DRILLING' MACHINE.

SPECIFICATION forming part of Letters Patent No. 735,222, dated August 4, 1903 Application led October 25, 1,902. Serial No. 128,817. (No model.)

of Ohio, have invented a new and useful Tell-Drilling Machine, of which the following is a specification. y

This invention relates to Well-drilling machines.

The objects of the invention are to simplify and improve the construction of the derrick by reducing the number of parts thereof to the minimum and disposing the parts in such manner as to effect mutual bracing of the structure as a whole, to reduce Wear of the spudding-rope to a minimum, to improve the construction of and to facilitate disconnection and shipment of the band-brake, and generally to improve the construction of machines of this character.

With the above and 'other objects in view, as will appear as the nature of the invention is better understood, the same consists in the novel construction and combination of parts of a Well-drilling machine, as will be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this, specification, and in which like characters of reference indicate corresponding parts, there are illustrated two forms of embodiment of the invention, each capable of carrying the same into practical operation, it being understood that the elements therein exhibited `may, be varied or changed as to shape, proportion, and exact manner of assemblage without departing from the spirit.

In the draWinga'Figure l is a viewin per spective of one Jform of the embodiment of the invention. Fig. 2 is a view in elevation, partly in section. Fig. 3 is a sectional detail View of a slightly-modified form of machine. Fig. 4 is a perspective detail view of a portion of the band-brake. Fig. is a longitudinal section of` Fig. 4.A Fig.. is a sectional detail View of one of the operating-sheaves.

The supporting-frame of the spudding apparatus comprises a base l, composed of longitudinal and transverse beams 2, 3, 4, and 5,

. respectively, and a derrick constructed of tWo which passes a spudding-'rope 8. The up= rights are held spaced at the proper distance apart by cross-beams 9, twoinclined beams 10 serving to brace the derrick against rearward movement under the operation of the drill. In the present machine the spuddingrope operates intermediate of the ends of the base, and in order to permit the same to operate without interference with any part of the derrick the latter is inclined toward the forward part of the machine and is held in this position by the beams l0. Under this disposition of the parts the weight of the drill and the spudding-rope will be transmitted from the masts to the beams 10 and from these to the front of the base, such Weight operating to hold the front of the base firmly seated, thereby obviating the necessity of em= ploying anchors of any kind for the purpose.

The spudding mechanism comprises a drum 1l, around which the spudding-rope is wound, the drum being supported in the bearingbeams 12, extending from the cross-beams 9 to the base-beam 4. As before stated, one of the objects of the present invention is to re= duce wear of the spudding-rope to a minimum, and this is effected by making the drum 11 of such length that only single coils of rope will be wound thereon in raising and lowering the drill, as opposed to the common practice of causing the spudding-rope to Abe coiled upon itself in two ormore layers. :By this arrangement it will be seen that the lifting power of the drum isalways the saine, inas= much as its diameter is notincreased by su*- "perposed coils of the rope, In order .to permit of the employment of a drum i suchas de scribed-that is, of greater `length than the drums in ordinary usesaid drum is located at the rear of the machine, and thus out of the way of the .operative parts, presently to be described, this disposition of the drum being permitted by attaching the lower ends of the mast to the terminals ofthe beam 4,` as clearly shown in Fig. 1, and bythis arrangement a drum coextensive with the width of thebase may be employed, which could not be effected if the masts Were disposed intermediate of the ends of the base. Under the operation of the drill with a derrick such as described IOO there will be no lateral strain upon the derrick for the reason that, as above pointed out, the weight of the drill and the spudding-rope will be in a vertical line and will be transmitted to the two ends of the base. The drum has secured to it a band-wheel13, around which passes a band-brake 14, one end of which, as clearly shown in Figs. 2 and 3, is stapled or otherwise secured to one of the longitudinal beams at 15, the other end being connected with the crank 16 of a lever 17, as clearly shown in Fig. 1. In well-drilling machines of the ordinary construction these bandbrakes are of considerable length-of from twenty to thirty feet-and in taking down the machine it is necessary to fold the brake, thus frequently resulting in forming bends or kinks in it, which when the brake is again placed in position materially militates against its proper operation. ln order to obviate this objection and to facilitate transportation of the band-brake, the same is made in a plurality of sections, in this instance of three, designated 18, 19, and 20, respectively, one terminal of the section 2O being secured to one of the longitudinal beams described and one terminal of the section 18 being secured to the crank of the lever 17, as described, the intermediate section 19 serving to connect the two first-named sections. In order to assemble the sections to cause them to present a continuous structure, one terminal of each of the sections 18 and 2O and both terminals of thesection 19 are bent to present recessed abutments 21, in which are placed filler-blocks 22, and through the iiller-blocks and abutments pass bolts 23, carrying nuts 24, by which to facilitate separation of the band-sections when desired. By making the band-brake in sections it may be made to conform more readily to the periphery of the band-wheel, and in the event of becoming kinked or bent a section or sections may be readily trued.

While the band-brake is herein shown as constructed in three sections, it is to be nnderstood that 1t may be made in two sections or of a greater number than three and still be Within the scope of the invention. The band-brake is applied and released by the lever 17 in the manner usual With such devices, and, if desired, in order to cause the band-brake to be more responsive in freeing the band-Wheel releasing devicesv may be employed, as shown in Figs. l, 2, and 3, said devices consisting of a eounterweght 25, earned byone end of a rope 26, which passes vis deemed unnecessary, being no partof the present invention.

By disposing the drum in the manner described--that is to say, at the rear of the derrick-the drill, as before pointed out, is caused to operate intermediate of the length of the base, and to throw the draft on the two members of the spudding-rope-namely, that member extending from the drum to the sheave 7 and the member extending from the sheave and carrying the drill*it is necessary that means be provided for holding a length of the spudding-rope outward some distance from the drum. This is effected by the employment of a rocking beam 29, as shown in Figs. 1 and 2, one end of which is fulcrumed between standards 30, secured upon the basepiece 2, the free end being provided with a yoke 31, in which is pivoted a sheave 32, around which passes the spudding-rope. To impart oscillatory movement to the rocking beam when the same is disposed in the manner described, it will be necessary to employ a ilexible connection between it and the driving mechanism, for the reason that a vertical down-pull will have to be exerted on the beam 29 to reciprocate the spudding-rope, and thus the drill, and this is accomplished through the medium of a rope or cable 33, one end of which is secured to the beam adjacent to the yoke 31, the other end of the rope being connected with a crank 34, carried by the shaft of a drive-wheel 35, around which passes a belt 3G to a suitable source of power. (Not shown.) The intermediate portion of the rope 33 passes around three sheaves 37, 38, and 39, arranged in a boxing 40, attached to the basebeam 2, the sheave 38 being disposed in a plane below that occupied by the other two sheaves, so that a broad and extended bearing is presented to the beam-actuating rope or member, which will reduce its Wear to a minimum.

As Will be seen by reference to Fig. 2, the rocking beam and length oi spudding-rope between the sheave 32 and the drum are disposed approximately in a horizontal plane and 1n parallelism, and by this arrangement under the oscillation of the rocking beam that portion of the spudding-rope passing `around the sheave 32 Will remain. practically stationary or, in other Words, there vvill be but. slight rolling motion, so that wear Of the rrope at. that point Will practically be obvated.

Ics

IIO

drum, thus to reduce wear of the rope at theV point Where it engages said sheave. With this exception the construction of the tWo devices is practically the same.

j It will be seen from the `foregoing description that although the machine of this invention is exceedingly simple in construction it will in a ready and feasible rmanner obviate many objections inherent to Well-drilling machines of more intricate character, and7 further, by the prevention of chang and Wearing of the spudding-rope that a large saving is eected in the operation of the machine.

Having thus described the invention, What I claim isl. In a Well-drilling machine, a spuddingrope-receiving drum, 4 a rocking beam fulcruined adjacent theretoand carryingasheave disposed, when the machine is in operation, approximately in horizontal alinement With the drum, driving mechanism, a plurality of sheaves supported on the base of the machine, and a iiexible power-transmitting element connecting the driving mechanism and the rocking beam.

2. In a Well-drilling machine, the combinai tion With a frame, of a spudding-rope, a receiving-drum therefor mounted in bearings at one end of the frame, a rocking beam fulcrumed adjacent to the drum and carrying a sheave adapted to receive the rope, and mechanism for operating the beam to reciprocate the rope, said mechanism being situated at a point distant from the drum; whereby the drum may be made of a length equal to the Width of the frame.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two Witnesses.

WILLIAM N. DUFFORD. f

Vitnesses:

J. Ross CoLHoUN, J H. JOCHUM, Jr. 

